Treating Paris mushrooms for storage or deep freezing - using a liquid which is an extract of mushroom peelings

摘要

The mushrooms are placed in a sealed area, the pressure is reduced to 25 to 50 mm Hg, and they are contacted with a liquid which penetrates the mushrooms when the vacuum is broken. The improvement comprises using as the liquid (a) water used for blanching the mushrooms or (b) juice extracted cold or hot and under pressure from the peeling wastes detached from the mushrooms in their prepn. The pref. liquid is (b) prepd from the roots and esp. after concn. at low temp to 5-10%, 20 or 30% solids. To the extract, egg white or milk albumin is pref added. The mushrooms absorb 250-300 g liquid/kilo; they are then blanched.